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Finding the Fourth Proportional to 318,872.80, 440,075.52 and 238,160.20

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Solution

The fourth proportional to 318,872.80, 440,075.52 and 238,160.20 is: 328,684.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,872.80 : 440,075.52 = 238,160.20 : x
  2. Step 2: Convert to fraction form
    318,872.80/440,075.52 = 238,160.20/x
  3. Step 3: Cross multiply
    318,872.80x = 440,075.52 × 238,160.20
  4. Step 4: Simplify right side
    318,872.80x = 104,808,473,858.30
  5. Step 5: Solve for x
    x = 104,808,473,858.30/318,872.80
  6. Step 6: Final answer
    x = 328,684.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.